#!/bin/bash

    Icon="/home/mynul/.config/keybordShortcut/icon/keyboardon.png"

    Icoff="/home/mynul/.config/keybordShortcut/icon/keyboardoff.png"

    fconfig=".keyboard" 

    devicename="Logitech USB Keyboard"

    id=$(xinput list --id-only "$devicename")

    if [ ! -f $fconfig ]; then

      echo "Creating config file"

      echo "enabled" > $fconfig

      var="enabled"

    else

      read -r var< $fconfig

      echo "keyboard is : $var"

    fi

    if [ "$var" = "disabled" ]; then

      notify-send -i $Icon "Enabling keyboard..." \ "ON - Keyboard connected !";

      echo "enable keyboard..."

      xinput enable $id

      echo "enabled" > $fconfig

    elif [ "$var" = "enabled" ]; then

      notify-send -i $Icoff "Disabling Keyboard" \ "OFF - Keyboard disconnected";

      echo "disable keyboard"

      xinput disable $id

      echo 'disabled' > $fconfig

    fi

// 1. bash file save as test.sh

// 2. to run it use command ' bash test.sh '

// for more info go to the sorce